AC fuel pump advice

[Ron Pier]

Thanks Richard. I haven't reamed through my manuals to see if there is a push rod length given or how it comes out. It's just that if I act as the push rod with my hands, there doesn't seem to be much downward movement of the diaphragm when I'm at the top of the stroke???

I haven't run the engine for a few months but it's never been a problem, so I assumed the diaphragm had dried out or cracked?

Cheers Ron